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So unfortunately on these newer Maytag front load washers, when you get both F35 and SUD the pressure switch is not the culprit. The actual issue is the main control board called the CCU which is mounted to the right side wall up above the washer tub in the front right corner. The CCU will need to be ordered and replaced to fix the issue. To access the part, it's the same as replacing the pressure switch, just remove the top panel above the washer. I'm very sorry about the bad news, the part is about $200, but that is definitely going to be your problem.
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Hello again. I'm just following up because I haven't heard back from you and I see this question is still open. Is there anything else I can help you with?